In summary, physical fatigue did not affect players' ability to detect information from the peripheral visual field and did not influence the quality of decision-making of soccer players. Results displayed that physical fatigue did not influence peripheral perception and decision-making quality, although it improved decision-making response time for the tactical principles of penetration, width and length with the ball, delay, defensive coverage, and recovery balance.

Peripheral perception and decision-making abilities were compared between the control and physical fatigue 'conditions'.

Physical fatigue was induced through T-SAFT 90 that simulated the metabolic and physical demands of a soccer game (e.g., acceleration, deacceleration, change direction, jump, and technical action). In laboratory conditions, the Vienna Test System and the TacticUP® video test was used to assess peripheral perception and decision making (response time and decision-making quality), respectively. The sample was composed of 48 soccer players from two youth academies of Brazilian clubs (17.03 ± 2.33 years old). This study aimed to verify whether the peripheral perception and decision making of young soccer players are influenced by physical fatigue.

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